1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QOPENGL_EXTENSIONS_P_H
5#define QOPENGL_EXTENSIONS_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists for the convenience
12// of the Qt OpenGL classes. This header file may change from
13// version to version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include <QtGui/private/qtguiglobal_p.h>
19#include "qopenglextrafunctions.h"
20
21QT_BEGIN_NAMESPACE
22
23class QOpenGLExtensionsPrivate;
24
25class Q_GUI_EXPORT QOpenGLExtensions : public QOpenGLExtraFunctions
26{
27 Q_DECLARE_PRIVATE(QOpenGLExtensions)
28public:
29 QOpenGLExtensions();
30 QOpenGLExtensions(QOpenGLContext *context);
31 ~QOpenGLExtensions() {}
32
33 enum OpenGLExtension {
34 TextureRectangle = 0x00000001,
35 GenerateMipmap = 0x00000002,
36 TextureCompression = 0x00000004,
37 MirroredRepeat = 0x00000008,
38 FramebufferMultisample = 0x00000010,
39 StencilTwoSide = 0x00000020,
40 StencilWrap = 0x00000040,
41 PackedDepthStencil = 0x00000080,
42 NVFloatBuffer = 0x00000100,
43 PixelBufferObject = 0x00000200,
44 FramebufferBlit = 0x00000400,
45 BGRATextureFormat = 0x00000800,
46 DDSTextureCompression = 0x00001000,
47 ETC1TextureCompression = 0x00002000,
48 PVRTCTextureCompression = 0x00004000,
49 ElementIndexUint = 0x00008000,
50 Depth24 = 0x00010000,
51 SRGBFrameBuffer = 0x00020000,
52 MapBuffer = 0x00040000,
53 GeometryShaders = 0x00080000,
54 MapBufferRange = 0x00100000,
55 Sized8Formats = 0x00200000,
56 DiscardFramebuffer = 0x00400000,
57 Sized16Formats = 0x00800000,
58 TextureSwizzle = 0x01000000,
59 StandardDerivatives = 0x02000000,
60 ASTCTextureCompression = 0x04000000,
61 ETC2TextureCompression = 0x08000000,
62 HalfFloatVertex = 0x10000000,
63 MultiView = 0x20000000,
64 MultiViewExtended = 0x40000000
65 };
66 Q_DECLARE_FLAGS(OpenGLExtensions, OpenGLExtension)
67
68 OpenGLExtensions openGLExtensions();
69 bool hasOpenGLExtension(QOpenGLExtensions::OpenGLExtension extension) const;
70
71 GLvoid *glMapBuffer(GLenum target, GLenum access);
72 void glGetBufferSubData(GLenum target, qopengl_GLintptr offset, qopengl_GLsizeiptr size, GLvoid *data);
73
74 void flushShared();
75 void discardFramebuffer(GLenum target, GLsizei numAttachments, const GLenum *attachments);
76
77 QOpenGLExtensionsPrivate *d() const;
78
79private:
80 static bool isInitialized(const QOpenGLFunctionsPrivate *d) { return d != nullptr; }
81};
82
83Q_DECLARE_OPERATORS_FOR_FLAGS(QOpenGLExtensions::OpenGLExtensions)
84
85class QOpenGLExtensionsPrivate : public QOpenGLExtraFunctionsPrivate
86{
87public:
88 explicit QOpenGLExtensionsPrivate(QOpenGLContext *ctx);
89
90 GLvoid* (QOPENGLF_APIENTRYP MapBuffer)(GLenum target, GLenum access);
91 void (QOPENGLF_APIENTRYP GetBufferSubData)(GLenum target, qopengl_GLintptr offset, qopengl_GLsizeiptr size, GLvoid *data);
92 void (QOPENGLF_APIENTRYP DiscardFramebuffer)(GLenum target, GLsizei numAttachments, const GLenum *attachments);
93
94 bool flushVendorChecked;
95 bool flushIsSufficientToSyncContexts;
96};
97
98inline QOpenGLExtensionsPrivate *QOpenGLExtensions::d() const
99{
100 return static_cast<QOpenGLExtensionsPrivate *>(d_ptr);
101}
102
103inline GLvoid *QOpenGLExtensions::glMapBuffer(GLenum target, GLenum access)
104{
105 Q_D(QOpenGLExtensions);
106 Q_ASSERT(QOpenGLExtensions::isInitialized(d));
107 GLvoid *result = d->MapBuffer(target, access);
108 Q_OPENGL_FUNCTIONS_DEBUG
109 return result;
110}
111
112inline void QOpenGLExtensions::glGetBufferSubData(GLenum target, qopengl_GLintptr offset, qopengl_GLsizeiptr size, GLvoid *data)
113{
114 Q_D(QOpenGLExtensions);
115 Q_ASSERT(QOpenGLExtensions::isInitialized(d));
116 d->GetBufferSubData(target, offset, size, data);
117 Q_OPENGL_FUNCTIONS_DEBUG
118}
119
120QT_END_NAMESPACE
121
122#endif // QOPENGL_EXTENSIONS_P_H
123

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source code of qtbase/src/gui/opengl/qopenglextensions_p.h